I believe all the goods of Vim comes from lightness and portability. There are plenty of Vim emulators on other editors. Emacs for example are ricer's heaven.
Ricer is a slang term for a supped (souped?) up/tricked out Japanese car, usually with lots of aftermarket parts which make it go faster than stock. Think civics and supras.
He’s making an analogy between those cars with tons of modifications and the extent of customization that seems common in emacs.
Race Inspired Cosmetic Enhancements. (R.I.C.E.)Parts put on cars to make them look fast, when they have no internal tuning, and are actually slow as hell. Parts usually consist of excessivley angular bodykits, large rear spoilers, neon, sponsor stickers, chrome rims, fake "coffee can" exhaust tips, and loud, annoying paint jobs and/or vynils. Sometimes parts are do-it-yourself installed and are basically duct taped to the car. Most commonly known for being done to Honda Civics, but can also be done to slow domestic vehicles, such as a Chevy Cavalier, etc.
In the common vernacular where I live it's generally meant as a pejorative.
I'm pretty sure that's a backronym and that "ricer" is a contraction of "rice rocket," i.e. a pejorative and slightly racist term for performant asian automobiles.